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3066 S6KT CAT Mitsubishi Engine Crankshaft Parts Forged Steel 5I7671 34320-10011 34320-00010
CAT Mitsubishi Engine Crankshaft Parts
,3066 Engine Crankshaft Parts
,S6KT mitsubishi crankshaft
3066 S6K S6KT Crankshaft Forged Steel 5I7671 34320-10011 34320-00010 for CAT Mitsubishi Engines
✅ Compatible Engine: CAT S6K, 3066, S6KT
✅ Typical Equipment: CAT E320B, E320C Excavator
✅ Material: Heavy-duty forged steel / nodular cast iron
✅ Surface Finish: Precision ground + nitrided journals
✅ Quality Assurance: Dynamic balance, dimensional & fillet inspection
✅ Market: Aftermarket replacement spare part
Description: Built for construction site heavy cycles, this S6K/3066 crankshaft withstands frequent shock and high load. Nitrided bearing surfaces slow down wear, while reinforced fillets resist fatigue fracture. Each unit is checked one by one before delivery to keep engine running smoothly.
CAT S6K / 3066 Crankshaft
A robust rotating core for CAT 6-cylinder diesel engine used on E320B & E320C excavators.
✔ High strength raw material for harsh working conditions
✔ Nitrided journals for long wear life
✔ Precision balanced to cut vibration
✔ Ready-to-fit for engine rebuild
This crankshaft is engineered exclusively for CAT S6K and 3066 series diesel engines, the common power unit fitted on CAT E320B and E320C excavators. Construction machinery operates under unpredictable heavy loads and vibration, so we adopt high-strength forged steel or nodular cast iron for this crankshaft. All journals are finely ground and nitrided to boost surface hardness. Fillet rolling process greatly improves fatigue performance to avoid unexpected breakage. We implement full inspection including dimension verification and dynamic balance testing. Consistent tolerance ensures seamless assembly and stable power output during long-hour excavation work. It is a reliable aftermarket solution for repair shops and fleet maintenance.
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